It just uses the state of the page at the end of the test you are running and considers that the end state. The description in the SpeedIndex docs are intentionally vague because it doesn't apply just to WebPageTest page load tests and could in theory be used for arbitrary videos.

(06-17-2015 05:21 AM)pmeenan Wrote: It just uses the state of the page at the end of the test you are running and considers that the end state. The description in the SpeedIndex docs are intentionally vague because it doesn't apply just to WebPageTest page load tests and could in theory be used for arbitrary videos.

As a follow up question, how does it determine the page is at its end state?